Whether you need more hard drive space in your iMac or you want to get in on some of that super-fast solid state drive action, the iFixit Dual Hard Drive Kit will help you put a second drive in your iMac.

We've talked about how to upgrade the hard drive in your iMac before, but some iMacs have quite a bit of extra space inside, meaning that if you want to, you can actually install a second hard drive instead of just replacing the first. This is perfect for solid state drives, which have low capacities but are super fast. That way, you can move your OS and apps to the SSD, and keep your music, documents, and other data on the large hard drive, and reap all the benefits without the space constraints.